Fluid-actuated spring mechanism.



UNITED STATES PATENT oF Icn.

CORPORATION, A CORPORATION OF ARIZONA.

' FLUID ACTUATED SPRING Specification of Letters Patent.

7 1 Patented Apr. 11, 1916.

Application flied March 16, 1915. Serial No. 14,710.

To allwkom z'tmay concern. I

Be it known that I, WILLIAM W GUEsT, a citizen of the United States, reslding at Alameda, in the county of Alameda, State of California, have invented a new and useful Fuid-Actuated Spring Mechanism, of

which the followingis a specification in such full and clear terms as, will enable those skilled in the art to construct and use the same.

This invention relates to a fluid spring adapted to take the place of the, ordinary metal springs and to dispense with the use of metal either in torsion or bending.

Another object of the invention is to produce a spring capable of'being varied in form to increase or diminish the resiliency thereof as may be r quired for-the given work to be done, and which may at the same time be so modified by the use of ,a high or low pressure therein asmay be required to carry heavy or light loads.

ing the life of the spring and improving its working qualities.

One of the objects of the inventionis to produce a fluid spring which,will insure the retention in the device of the air or other gas used for giving the resilient effect. 7

An embodiment ofthe invention is shown in the drawing in which the same reference numeral is applied to .the same portion throughout, but I am aware. that there !are many modifications thereof; I

Figure 1 is a vertical sectional view thereof," and Fig. 2 is a side elevation of the complete spring.

The spring oomprlses two cups 1 and 2 connected by means of acoupling 3'. .The couplin 3is threaded on the-cup 1 and it I hasan lnturned flange 4 which overlies the outwardly turned flange 5 of the cup,'therecup has a portion thereof extending -inwardly as indicated at 6 and 7 for the pur pose of reducing the total volume-of air under pressure and the extension 7 is provided with a hole through which the air valve 8 projects, said valve being .of awell own type and being connected to the air receptaole 9'which may be made of any desired air or water tight material such as rubber or the like. The bag 9 has a plurality of outwardly extending ribs 10 which ribs have their lnner surfaces closely adjacent the part of the bag covering the extensions 6 and 7. The grooves formed between adj acent ribs are surrounded by rings 12, while the ribs are each covered with, a channel ring 13 havng its flanges projecting into close proximity to the rings 12. In order to prevent the material of which the gas bag or air bag is made from being abraded by the rings 12 and 13 each ring is covered with a suitably hard and flexible material 15. This spring is lntended for compression work and each of the cups 1 and 2 is provided with lugs as indicated at 16, 17 18 and 19 for connecting the spring casing with any suitable shackle. It is to be observed that the possible movement is the distance between the flange 5 and the end of the cup 1 opposite it, and it will also be seen that the resilient effect of the spring may be varied either by increasing or. diminishing the pressure therein or by changing the total internal volume byproducing cups with shallow or deep depressionsvas may be. required for the given work. In other words, if the spring is constructed as shown in the drawing and neglecting the WILLIAM w. GUEST, or} ALAMEDA, CALIFORNIA, ASSIGNOR 'ro rnn ECLA MINING space between the several flanges of the fluid is a part moves one-half the distance toward the cup, while if the volume in the bag is larger by 50% the increase in'pressure for 'the same movement will be correspondingly less.

Having thus described my invention what I claim as new and desire to secure by Letters Patent Iof theUnited States, is as follows, modifications within the scope of the claims being expressly reserved:

1. A fluid spring comprising a pair' of cups, a coupling for connecting thecups and for permitting one to move with respect to the other," a corrugated gas bag within the. cups for holding them resiliently apart, a

plurality of rings in the corrugations of said 'bag for strengtheningit, and a'plurality of channel bars surrounding each corrugation of the bag.-

2; A fluid spring comprising a pair of :cups each having a depression in its end, a

coupling for connecting one cup to the other and for permitting one cup to move With 'respect to the otherfa corrugated gas bag Within the cups for holdilig them resiliently apart, a ringin each depression of the corrugated gas bag, a plurality of channel rings bag Within the cups for holding them re-- i,17s,css a siliently apart, a ring in each depression of the corrugated gas bag, a plurality of channel rings surrounding the several corrugations of the gas bag, a band surrounding each channel ring, and a valve for admitting the supply of gas to said gas bag.

'Intestimony whereof I have hereunto set my hand this 9th day of March, 1915, in the presence of the. tWo subscribed Witnesses.

WILLIAM W. GUEST.

Witnesses:

O. 0. Russ, C. P. GRIFFIN. 

